Witlink will launch WMbus module in June 2016, endeavoring to advance meter "Four in One". With no need for wiring, WMbus module networking defines three methods of exchanging data with remote metering devices: S, T, and R modes. It can measure, collect and dispose water, electricity, gas and heat usage information, reduce manual reading cost and achieve a more convenient and highly efficient user data management. Witlink, devoted to establishing "Four in One" system, offers a whole solution package for utilities, develops subsequent value added services by gaining customer information, pushes green city construction, and solves troubles of multiple cards, multiple times and multiple channels of paying fees, providing quality and efficient service to water, electricity, gas and heat users.